80 lines
3.0 KiB
C
80 lines
3.0 KiB
C
|
/* $FreeBSD$ */
|
||
|
|
/* $NetBSD: rf_evenodd_dagfuncs.h,v 1.2 1999/02/05 00:06:11 oster Exp $ */
|
||
|
|
/*
|
||
|
|
* rf_evenodd_dagfuncs.h
|
||
|
|
*/
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1996 Carnegie-Mellon University.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Author: Chang-Ming Wu
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify and distribute this software and
|
||
|
|
* its documentation is hereby granted, provided that both the copyright
|
||
|
|
* notice and this permission notice appear in all copies of the
|
||
|
|
* software, derivative works or modified versions, and any portions
|
||
|
|
* thereof, and that both notices appear in supporting documentation.
|
||
|
|
*
|
||
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
||
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
||
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
||
|
|
*
|
||
|
|
* Carnegie Mellon requests users of this software to return to
|
||
|
|
*
|
||
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
||
|
|
* School of Computer Science
|
||
|
|
* Carnegie Mellon University
|
||
|
|
* Pittsburgh PA 15213-3890
|
||
|
|
*
|
||
|
|
* any improvements or extensions that they make and grant Carnegie the
|
||
|
|
* rights to redistribute these changes.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _RF__RF_EVENODD_DAGFUNCS_H_
|
||
|
|
#define _RF__RF_EVENODD_DAGFUNCS_H_
|
||
|
|
|
||
|
|
extern RF_RedFuncs_t rf_EOSmallWriteEFuncs;
|
||
|
|
extern RF_RedFuncs_t rf_EOSmallWritePFuncs;
|
||
|
|
extern RF_RedFuncs_t rf_eoERecoveryFuncs;
|
||
|
|
extern RF_RedFuncs_t rf_eoPRecoveryFuncs;
|
||
|
|
|
||
|
|
int rf_RegularPEFunc(RF_DagNode_t * node);
|
||
|
|
int rf_RegularONEFunc(RF_DagNode_t * node);
|
||
|
|
int rf_SimpleONEFunc(RF_DagNode_t * node);
|
||
|
|
void rf_RegularESubroutine(RF_DagNode_t * node, char *ebuf);
|
||
|
|
int rf_RegularEFunc(RF_DagNode_t * node);
|
||
|
|
void rf_DegrESubroutine(RF_DagNode_t * node, char *ebuf);
|
||
|
|
int rf_Degraded_100_EOFunc(RF_DagNode_t * node);
|
||
|
|
void
|
||
|
|
rf_e_EncOneSect(RF_RowCol_t srcLogicCol, char *srcSecbuf,
|
||
|
|
RF_RowCol_t destLogicCol, char *destSecbuf, int bytesPerSector);
|
||
|
|
void
|
||
|
|
rf_e_encToBuf(RF_Raid_t * raidPtr, RF_RowCol_t srcLogicCol,
|
||
|
|
char *srcbuf, RF_RowCol_t destLogicCol, char *destbuf, int numSector);
|
||
|
|
int rf_RecoveryEFunc(RF_DagNode_t * node);
|
||
|
|
int rf_EO_DegradedWriteEFunc(RF_DagNode_t * node);
|
||
|
|
void
|
||
|
|
rf_doubleEOdecode(RF_Raid_t * raidPtr, char **rrdbuf, char **dest,
|
||
|
|
RF_RowCol_t * fcol, char *pbuf, char *ebuf);
|
||
|
|
int rf_EvenOddDoubleRecoveryFunc(RF_DagNode_t * node);
|
||
|
|
int rf_EOWriteDoubleRecoveryFunc(RF_DagNode_t * node);
|
||
|
|
|
||
|
|
#define rf_EUCol(_layoutPtr_, _addr_ ) \
|
||
|
|
( (_addr_)%( (_layoutPtr_)->dataSectorsPerStripe ) )/((_layoutPtr_)->sectorsPerStripeUnit)
|
||
|
|
|
||
|
|
#define rf_EO_Mod( _int1_, _int2_ ) \
|
||
|
|
( ((_int1_) < 0)? (((_int1_)+(_int2_))%(_int2_)) : (_int1_)%(_int2_) )
|
||
|
|
|
||
|
|
#define rf_OffsetOfNextEUBoundary(_offset_, sec_per_eu) ((_offset_)/(sec_per_eu) + 1)*(sec_per_eu)
|
||
|
|
|
||
|
|
#define RF_EO_MATRIX_DIM 17
|
||
|
|
|
||
|
|
/*
|
||
|
|
* RF_EO_MATRIX_DIM should be a prime number: and "bytesPerSector" should be
|
||
|
|
* dividable by ( RF_EO_MATRIX_DIM - 1) to fully encode and utilize the space
|
||
|
|
* in a sector, this number could also be 17. Tha later case doesn't apply
|
||
|
|
* for disk array larger than 17 columns totally.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#endif /* !_RF__RF_EVENODD_DAGFUNCS_H_ */
|